Solve the problem.A garage owner wants to fill a 55-gallon drum with a 20% winter mixture of antifreeze for his customers. How many gallons of 100% antifreeze should he mix with some 10% antifreeze mixture in order to fill the drum?
A. 48
gallons
B. 19
gallons
C. 6
gallons
D. 35
gallons
Answer: C
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Evaluate the integral.
A. 
ln
- 
ln 
+ C
B. ln
- ln 
+ C
C. 
ln
+ 
ln
+ C
D. 
ln
- 
ln
+ C
Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (cos x)x
A. (cos x)x (ln cos x - x tan x) B. ln x(cos x)x - 1 C. ln cos x - x tan x D. (cos x)x (ln cos x + x cot x)
Find the simple interest and amount for the value of principal P, rate r per year, and time t.P = $7500, r = 6.3%, t = 3 years and 4 months
A. $1575.00, $9075.00 B. $1575.00, $5925.00 C. $157.50, $7657.50 D. $15,750.00, $23,250.00
Find the probability.A bag contains 8 red marbles, 2 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue when one marble is drawn from the bag?
A. 
B. 
C. 9
D. 